The unique, somewhat odd recreational activity of Zorbing was invented by Dwane van der Sluis and Andrew Akers of New Zealand. Zorbing involves strapping oneself into an inflatable, transparent ball. Then, you roll down hills going about twenty-five miles an hour. It's safe of course, as the sphere, which is called a "Zorb," protects you from the dangers of the outside world.
Andrew Akers and Dwane van der Sluis kind of designed the activity on accident however, as they wanted to create a kind of ball that would float on water. They had seen a commercial on television which had showed some people in a large, clear ball floating no water. However, when people left or entered the sphere, it would become deflated and would have to be inflated again. That was when they created the idea of a ball with two skins. Although it worked on water like they wanted, it was very tiring for those who got to try it. The ball was also prone to blowing further off into the sea. They then just decided to use the sphere to roll down hills, which worked wonderfully. Zorbing was finally invented, though there are conflicting dates for when it was invented. The general consensus is that Zorbing was created in the 1990s.